Snorkel A46JRT, Operator'S Manual

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A46JRT – 0261169 43
Chapter 11 – Troubleshooting
The troubleshooting chart may be used to locate and
eliminate situations where machine operation may be
interrupted. If the problem cannot be corrected with the
action listed, stow the machine and remove it from ser-
vice. Repairs must be made by qualified maintenance
personnel.
Troubleshooting Chart Troubleshooting Chart
Symptom
All functions stop working.
Lower controls do
not work.
Upper controls do
not work.
Riser and/or main boom drifts
down.
Boom and drive functions seem
sluggish.
Drive functions do
not work.
Continued on next page...
Possible Cause
Low fluid level in reservoir.
Engine or pump failure.
Emergency stop button at lower con-
trols is pushed in to the off position.
Control selector handle is in the
upper control position.
Ground operation button not held in
the on position.
Emergency stop button at lower and
upper controls is in the off position.
Control selector handle at lower
controls is in the lower control
position.
Platform foot valve not engaged.
Hydraulic system malfunction.
Hydraulic oil is cold and thick.
Load capacity exceeded.
Machine on too steep a grade.
Drive hubs are disengaged.
Low hydraulic system pressure.
Corrective Action
Check fluid level. Add correct type
of fluid if necessary.
Manually stow the machine using
the emergency lowering knob.
Pull the emergency stop button
outward.
Place the handle in the lower control
position.
Press and hold the ground opera-
tion button inward while operating
the control buttons.
Pull the emergency stop buttons
outward.
Place handle in the upper controls
position.
Step down on platform foot valve
while operating controls.
Stow the machine and do not oper-
ate until repairs are made.
Use cold weather hydraulic oil as
recommended for weather condi-
tions. Warm oil before operating
the machine.
Remove load from platform. Refer
to platform capacity placard for
maximum capacity.
Lower the booms and drive to a
level surface.
Turn drive wheel disconnect plates
around so nipples point outward.
Stow the machine and do not oper-
ate until repairs are made.